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Fetal Psychology
Psychology Today ^ | 1-5-05 | Janet L. Hopson

Posted on 01/11/2005 12:29:05 PM PST by beavus

Behaviorally speaking, there's little difference between a newborn baby and a32-week-old fetus. A new wave of research suggests that the fetus can feel, dream, even enjoy The Cat in the Hat. The abortion debate may never be the same.

The scene never fails to give goose bumps: the baby, just seconds old and still dewy from the womb, is lifted into the arms of its exhausted but blissful parents. They gaze adoringly as their new child stretches and squirms, scrunches its mouth and opens its eyes. To anyone watching this tender vignette, the message is unmistakable. Birth is the beginning of it all, ground zero, the moment from which the clock starts ticking.

Not so, declares Janet DiPietro. Birth may be a grand occasion, says the Johns Hopkins University psychologist, but "it is a trivial event in development. Nothing neurologically interesting happens."

Armed with highly sensitive and sophisticated monitoring gear, DiPietro and other researchers today are discovering that the real action starts weeks earlier. At 32 weeks of gestation--two months before a baby is considered fully prepared for the world, or "at term" --a fetus is behaving almost exactly as a newborn. And it continues to do so for the next 12 weeks.

As if overturning the common conception of infancy weren't enough, scientists are creating a startling new picture of intelligent life in the womb. Among the revelations:

o By nine weeks, a developing fetus can hiccup and react to loud noises. By the end of the second trimester it can hear.

o Just as adults do, the fetus experiences the rapid eye movement (REM) sleep of dreams.

o The fetus savors its mother's meals, first picking up the food tastes of a culture in the womb.

o Among other mental feats, the fetus can distinguish between the voice of Mom and that of a stranger, and respond to a familiar story read to it.

o Even a premature baby is aware, feels, responds, and adapts to its environment.

o Just because the fetus is responsive to certain stimuli doesn't mean that it should be the target of efforts to enhance development. Sensory stimulation of the fetus can in fact lead to bizarre patterns of adaptation later on.

The roots of human behavior, researchers now know, begin to develop early--just weeks after conception, in fact. Well before a woman typically knows she is pregnant, her embryo's brain has already begun to bulge. By five weeks, the organ that looks like a lumpy inchworm has already embarked on the most spectacular feat of human development: the creation of the deeply creased and convoluted cerebral cortex, the part of the brain that will eventually allow the growing person to move, think, speak, plan, and create in a human way.

At nine weeks, the embryo's ballooning brain allows it to bend its body, hiccup, and react to loud sounds. At week ten, it moves its arms, "breathes" amniotic fluid in and out, opens its jaw, and stretches. Before the first trimester is over, it yawns, sucks, and swallows as well as feels and smells. By the end of the second trimester, it can hear; toward the end of pregnancy, it can see.

FETAL ALERTNESS

Scientists who follow the fetus's daily life find that it spends most of its time not exercising these new abilities but sleeping. At 32 weeks, it drowses 90 to 95% of the day. Some of these hours are spent in deep sleep, some in REM sleep, and some in an indeterminate state, a product of the fetus's immature brain that is different from sleep in a baby, child, or adult. During REM sleep, the fetus's eyes move back and forth just as an adult's eyes do, and many researchers believe that it is dreaming. DiPietro speculates that fetuses dream about what they know--the sensations they feel in the womb.

Closer to birth, the fetus sleeps 85 or 90% of the time the same as a newborn. Between its frequent naps, the fetus seems to have "something like an awake alert period," according to developmental psychologist William Filer, who with his Columbia University colleagues is monitoring these sleep and wakefulness cycles in order to identify patterns of normal and abnormal brain development, including potential predictors of sudden infant death syndrome. Says Filer, "We are, in effect, asking the fetus: 'Are you paying attention? Is your nervous system behaving in the appropriate way?'"

FETAL MOVEMENT

Awake or asleep, the human fetus moves 50 times or more each hour, flexing and extending its body, moving its head, face, and limbs and exploring its warm wet compartment by touch. Heidelise Als, a developmental psychologist at Harvard Medical School, is fascinated by the amount of tactile stimulation a fetus gives itself. "It touches a hand to the face, one hand to the other hand, clasps its feet, touches its foot to its leg, its hand to its umbilical cord," she reports.

Als believes there is a mismatch between the environment given to preemies in hospitals and the environment they would have had in the womb. She has been working for years to change the care given to preemies so that they can curl up, bring their knees together, and touch things with their hands as they would have for weeks in the womb.

Along with such common movements, DiPietro has also noted some odder fetal activities, including "licking the uterine wall and literally walking around the womb by pushing off with its feet." Laterborns may have more room in the womb for such maneuvers than first babies. After the initial pregnancy, a woman's uterus is bigger and the umbilical cord longer, allowing more freedom of movement. "Second and subsequent children may develop more motor experience in utero and so may become more active infants," DiPietro speculates.

Fetuses react sharply to their mother's actions. "When we're watching the fetus on ultrasound and the mother starts to laugh, we can see the fetus, floating upside down in the womb, bounce up and down on its head, bum-bum-bum, like it's bouncing on a trampoline," says DiPietro. "When mothers watch this on the screen, they laugh harder, and the fetus goes up and down even faster. We've wondered whether this is why people grow up liking roller coasters."

FETAL TASTE

Why people grow up liking hot chilies or spicy curries may also have something to do with the fetal environment. By 13 to 15 weeks a fetus' taste buds already look like a mature adult's, and doctors know that the amniotic fluid that surrounds it can smell strongly of curry, cumin, garlic, onion and other essences from a mother's diet. Whether fetuses can taste these flavors isn't yet known, but scientists have found that a 33-week-old preemie will suck harder on a sweetened nipple than on a plain rubber one.

"During the last trimester, the fetus is swallowing up to a liter a day" of amniotic fluid, notes Julie Mennella, a biopsychologist at the Monell Chemical Senses Center in Philadelphia. She thinks the fluid may act as a "flavor bridge" to breast milk, which also carries food flavors from the mother's diet.

FETAL HEARING

Whether or not a fetus can taste, there's little question that it can hear. A very premature baby entering the world at 24 or 25 weeks responds to the sounds around it, observes Als, so its auditory apparatus must already have been functioning in the womb. Many pregnant women report a fetal jerk or sudden kick just after a door slams or a car backfires.

Even without such intrusions, the womb is not a silent place. Researchers who have inserted a hydrophone into the uterus of a pregnant woman have picked up a noise level "akin to the background noise in an apartment," according to DiPietro. Sounds include the whooshing of blood in the mother's vessels, the gurgling and rumbling of her stomach and intestines, as well as the tones of her voice filtered through tissues, bones, and fluid, and the voices of other people coming through the amniotic wall. Fifer has found that fetal heart rate slows when the mother is speaking, suggesting that the fetus not only hears and recognizes the sound, but is calmed by it.

FETAL VISION

Vision is the last sense to develop. A very premature infant can see light and shape; researchers presume that a fetus has the same ability. Just as the womb isn't completely quiet, it isn't utterly dark, either. Says Filer: "There may be just enough visual stimulation filtered through the mother's tissues that a fetus can respond when the mother is in bright light," such as when she is sunbathing.

Japanese scientists have even reported a distinct fetal reaction to flashes of light shined on the mother's belly. However, other researchers warn that exposing fetuses (or premature infants) to bright light before they are ready can be dangerous. In fact, Harvard's Als believes that retinal damage in premature infants, which has long been ascribed to high concentrations of oxygen, may actually be due to overexposure to light at the wrong time in development.

A six-month fetus, born about 14 weeks too early, has a brain that is neither prepared for nor expecting signals from the eyes to be transmitted into the brain's visual cortex, and from there into the executive-branch frontal lobes, where information is integrated. When the fetus is forced to see too much too soon, says Als, the accelerated stimulation may lead to aberrations of brain development.

FETAL LEARNING

Along with the ability to feel, see, and hear comes the capacity to learn and remember. These activities can be rudimentary, automatic, even biochemical. For example, a fetus, after an initial reaction of alarm, eventually stops responding to a repeated loud noise. The fetus displays the same kind of primitive learning, known as habituation, in response to its mother's voice, Fifer has found.

But the fetus has shown itself capable of far more. In the 1980s, psychology professor Anthony James DeCasper and colleagues at the University of North Carolina at Greensboro devised a feeding contraption that allows a baby to suck faster to hear one set of sounds through headphones and to suck slower to hear a different set. With this technique, DeCasper discovered that within hours of birth, a baby already prefers its mother's voice to a stranger's, suggesting it must have learned and remembered the voice, albeit not necessarily consciously, from its last months in the womb. More recently, he's found that a newborn prefers a story read to it repeatedly in the womb--in this case, The Cat in the Hat--over a new story introduced soon after birth.

DeCasper and others have uncovered more mental feats. Newborns can not only distinguish their mother from a stranger speaking, but would rather hear Mom's voice, especially the way it sounds filtered through amniotic fluid rather than through air. They're xenophobes, too: they prefer to hear Mom speaking in her native language than to hear her or someone else speaking in a foreign tongue.

By monitoring changes in fetal heart rate, psychologist JeanPierre Lecanuet and his colleagues in Paris have found that fetuses can even tell strangers' voices apart. They also seem to like certain stories more than others. The fetal heartbeat will slow down when a familiar French fairy tale such as "La Poulette" ("The Chick") or "Le Petit Crapaud" ("The Little Toad") is read near the mother's belly. When the same reader delivers another unfamiliar story, the fetal heartbeat stays steady

The fetus is likely responding to the cadence of voices and stories, not their actual words, observes Fifer, but the conclusion is the same: the fetus can listen, learn, and remember at some level, and, as with most babies and children, it likes the comfort and reassurance of the familiar.

FETAL PERSONALITY

It's no secret that babies are born with distinct differences and patterns of activity that suggest individual temperament. Just when and how the behavioral traits originate in the womb is now the subject of intense scrutiny.

In the first formal study of fetal temperament in 1996, DiPietro and her colleagues recorded the heart rate and movements of 31 fetuses six times before birth and compared them to readings taken twice after birth. (They've since extended their study to include 100 more fetuses.) Their findings: fetuses that are very active in the womb tend to be more irritable infants. Those with irregular sleep/wake patterns in the womb sleep more poorly as young infants. And fetuses with high heart rates become unpredictable, inactive babies.

"Behavior doesn't begin at birth," declares DiPietro. "It begins before and develops in predictable ways." One of the most important influences on development is the fetal environment. As Harvard's Als observes, "The fetus gets an enormous amount of 'hormonal bathing' through the mother, so its chronobiological rhythms are influenced by the mother's sleep/wake cycles, her eating patterns, her movements."

The hormones a mother puts out in response to stress also appear critical. DiPietro finds that highly pressured mothers-to-be tend to have more active fetuses--and more irritable infants. "The most stressed are working pregnant women," says DiPietro. "These days, women tend to work up to the day they deliver, even though the implications for pregnancy aren't entirely clear yet. That's our cultural norm, but I think it's insane."

Als agrees that working can be an enormous stress, but emphasizes that pregnancy hormones help to buffer both mother and fetus. Individual reactions to stress also matter. "The pregnant woman who chooses to work is a different woman already from the one who chooses not to work," she explains.

She's also different from the woman who has no choice but to work. DiPietro's studies show that the fetuses of poor women are distinct neurobehaviorally-less active, with a less variable heart rate--from the fetuses of middle-class women. Yet "poor women rate themselves as less stressed than do working middle-class women," she notes. DiPietro suspects that inadequate nutrition and exposure to pollutants may significantly affect the fetuses of poor women.

Stress, diet, and toxins may combine to have a harmful effect on intelligence. A recent study by biostatistician Bernie Devlin, of the University of Pittsburgh, suggests that genes may have less impact on IQ than previously thought and that the environment of the womb may account for much more. "Our old notion of nature influencing the fetus before birth and nurture after birth needs an update," DiPietro insists. "There is an antenatal environment, too, that is provided by the mother."

Parents-to-be who want to further their unborn child's mental development should start by assuring that the antenatal environment is wellnourished, low-stress, drug-free. Various authors and "experts" also have suggested poking the fetus at regular intervals, speaking to it through a paper tube or "pregaphone," piping in classical music, even flashing lights at the mother's abdomen.

Does such stimulation work? More importantly: Is it safe? Some who use these methods swear their children are smarter, more verbally and musically inclined, more physically coordinated and socially adept than average. Scientists, however, are skeptical.

"There has been no defended research anywhere that shows any enduring effect from these stimulations," asserts Filer. "Since no one can even say for certain when a fetus is awake, poking them or sticking speakers on the mother's abdomen may be changing their natural sleep patterns. No one would consider poking or prodding a newborn baby in her bassinet or putting a speaker next to her ear, so why would you do such a thing with a fetus?"

Als is more emphatic. "My bet is that poking, shaking, or otherwise deliberately stimulating the fetus might alter its developmental sequence, and anything that affects the development of the brain comes at a cost."

Gently talking to the fetus, however, seems to pose little risk. Fifer suggests that this kind of activity may help parents as much as the fetus. "Thinking about your fetus, talking to it, having your spouse talk to it, will all help prepare you for this new creature that's going to jump into your life and turn it upside down," he says--once it finally makes its anti-climactic entrance.

WHAT'S THE IMPACT ON ABORTION?

Though research in fetal psychology focuses on the last trimester, when most abortions are illegal, the thought of a fetus dreaming, listening and responding to its mother's voice is sure to add new complexity to the debate. The new findings undoubtedly will strengthen the convictions of right-to-lifers--and they may shake the certainty of pro-choice proponents who believe that mental life begins at birth.

Many of the scientists engaged in studying the fetus, however, remain detached from the abortion controversy, insisting that their work is completely irrelevant to the debate.

"I don't think that fetal research informs the issue at all," contends psychologist Janet DiPietro of Johns Hopkins University. "The essence of the abortion debate is: When does life begin? Some people believe it begins at conception, the other extreme believes that it begins after the baby is born, and there's a group in the middle that believes it begins at around 24 or 25 weeks, when a fetus can live outside of the womb, though it needs a lot of help to do so.

"Up to about 25 weeks, whether or not it's sucking its thumb or has personality or all that, the fetus cannot survive outside of its mother. So is that life, or not? That is a moral, ethical, and religious question, not one for science. Things can behave and not be alive. Right-to-lifers may say that this research proves that a fetus is alive, but it does not. It cannot."

"Fetal research only changes the abortion debate for people who think that life starts at some magical point," maintains Heidelise AIs, a psychologist at Harvard University. "If you believe that life begins at conception, then you don't need the proof of fetal behavior." For others, however, abortion is a very complex issue and involves far more than whether research shows that a fetus is alive. "Your circumstances and personal beliefs have much more impact on the decision," she observes.

Like DiPietro, AIs realizes that "people may use this research as an emotional way to draw people to the pro-life side, but it should not be used by belligerent activists." Instead, she believes, it should be applied to helping mothers have the healthiest pregnancy possible and preparing them to best parent their child. Columbia University psychologist William Fifer agrees. "The research is much more relevant for issues regarding viable fetuses--preemies."

Simply put, say the three, their work is intended to help the babies that live--not to decide whether fetuses should.


TOPICS: Culture/Society; Miscellaneous; Philosophy
KEYWORDS: abortion; embryology; fetus; poofism; prenataldevelopment; prochoice; prolife; psychology; scnt; spacetimecontinuum
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To: theFIRMbss
Before I formed you in the womb I knew you;
Before you were born I sanctified you
Jeremiah 1:5

Amen! In the very Beginning He knew us all.

Psa 139:13 For thou hast possessed my reins: thou hast covered me in my mother's womb.

Psa 139:14 I will praise thee; for I am fearfully [and] wonderfully made: marvellous [are] thy works; and [that] my soul knoweth right well.

Psa 139:15 My substance was not hid from thee, when I was made in secret, [and] curiously wrought in the lowest parts of the earth.
61 posted on 01/11/2005 2:32:55 PM PST by Esther Ruth
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To: beavus

But without conception the chemical reactions would not take place.


62 posted on 01/11/2005 2:33:08 PM PST by Jaded (Clothes make the man. Naked people have little or no influence on society. - Mark Twain)
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To: beavus

So you're saying that just because humans can't observe something, it's not true or it can't exist? Sorry, but I'm not so pretentious as to believe that current human knowledge and ability are at the highest level in the universe. I'm sure earlier humans thought that they were "all that", and look at how we've advanced since then. In another 1,000 years, I'm sure we'll look like imbeciles compared to the people who will then be alive.


63 posted on 01/11/2005 2:33:25 PM PST by RBranha
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To: beavus

Earth to beavus!

Some of your proof is in post #61. Having had three children of my own, just take my word for it. Life begins at conception.


64 posted on 01/11/2005 2:40:46 PM PST by Paperdoll (on the cutting edge.!)
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To: beavus
Maybe, but this is no reason to promote factual falsehoods.

Science, my friend, has a long and ignominious history of promoting factual falsehoods.

Your objection to the idea of human life beginning and ending appears to be a simple semantic jump to the definition of the word "life" referring to the cellular level biological processes at work in human tissue. Frankly, that ain't what this thread is about and you know it.

To ignore the plain fact that a living human being did not exist nine months ago, but there is now a living, squirming, adorable newborn baby, and to torture the definition of the word "beginning" to exclude this process is the very definition of disingenuousness. To blithely pass by the event of a human's ceasing to breathe, his heartbeat stopped, his brain activity nonexistent and the flesh of his body quickly and entirely beginning to decay while declaring that a true "ending" has not occurred is equally silly.

65 posted on 01/11/2005 2:45:08 PM PST by TChris (Most people's capability for inference is severely overestimated)
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To: beavus

And incidentally, concerning "rights", I imagine you are referring to Civil Rights - The right to life means just that. When the egg is fertilized life begins, thus the right to life, and civil rights, begins at that very moment. Sorry your mother dropped you on
YOUR head. Enough said.


66 posted on 01/11/2005 2:45:25 PM PST by Paperdoll (on the cutting edge.!)
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To: Ed Current
Robert H. Bork stated,"Science and rational demonstration prove that a human exists from the moment of conception."

With all due respect to Judge Bork, taken literally, his statement is factually incorrect. There is no meaningful moment. On small enough time scales, almost all biological process are continuous and smooth, especially complex ones such as conception.

After fertilization has taken place a new human being has come into existence. This is no longer a matter of taste or opinion. Each individual has a very neat beginning, at conception." Dr. Jerome Lejeune, genetics professor

His first sentence may be true, but his third sentence is plainly false, if by "beginning" he refers to a infinitessimal time point (which he most likely does not).

"By all the criteria of modern molecular biology, life is present from the moment of conception." Professor Hymie Gordon, Mayo Clinic.

Ditto. There is no specific "moment", but rather a process.

"The question as to when a human being begins is strictly a scientific question, and should be answered by human embryologists - not by philosophers, bioethicists, theologians, politicians, x-ray technicians, movie stars, or obstetricians and gynecologists."

Instead of being factually false, this one is just an opinion I disagree with. The issue is primarily one of rights.

"The question as to when a human person begins is a philosophical question - not a scientific question. I will not go into great detail here, but ""personhood"" begins when the human being begins - at fertilization."

Here I agree that it is a philosophical, not scientific, question. But if he means by "begin" that there is a specific meaningful time point, then he is factually in error.

Much of the rest of your posting are pretty standard biology, with no bearing on the issue, except to the extent that the biological descriptions presuppose the space-time continuum.

It is fine for scientists to speak to one another about "beginnings" and "moments" in some vague sense presupposing the underlying continua. However, too many lay people (such as yourself, apparently) take such language literally and actually come to believe that there are magical poofs in time. However, such poofs are at odds with our most abundant observations.

67 posted on 01/11/2005 2:47:12 PM PST by beavus
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To: DesignerChick
"That is a moral, ethical, and religious question, not one for science." (It most certainly is! - If science can't face the fact that we exist and are alive in the womb, and therefore can be killed on a woman's whim, it is being intellectually dishonest to say the least!)

The reason I believe it is more of a philosophical question, is that the science of human biology does not address why we recognize rights in things. For one, the biology is qualitatively similar to the biology of rightsless things, such as lower animals. Second, the concept of rights was well-developed (mostly developed, really) before any knowledge of genetics and embryology. John Locke's notion of human rights was not held in suspense until we found out whether humans had 46 or 146 chromosomes. The empirical observations needed to understand rights were available to men thousands of years ago.

Prove to me the fetus is NOT alive

It is alive, in the sense that it has functioning cellular processes. "Life" is an ambinguous term. It can mean many things including "human life" and "individual human life". I think if we could come up with a less ambiguous term it would also help to better understand the issue.

"Right-to-lifers may say that this research proves that a fetus is alive, but it does not. It cannot." WHAT?!?!? Did this person realize the utter stupidity of that statement? A fetus is a living human being at its earliest development...when exactly does it become 'alive'? If it wasn't 'alive' we wouldn't he able to KILL IT!!!!

I agree. "Life" being ambiguous, there is no telling what the speaker meant, and he should have known better. In one sense of the word "life", he is clearly in factual error.

A magical point? It that the buzz word for conception? Complex issue? For people who want to rationalize abortions. At conception you exist....you start there and continue to develop.

Actually, the developmental continuum is everpresent. The speaker astutely used the word "magical" because some people believe that there is a discontinuity in space and time sometime around conception. The belief in such a discontinuity is magical thinking. Enough is known about biology, chemistry, and physics, to know that the continuum is not interrupted.

WAIT! I thought the fetuses weren't alive to begin with....so if they're not alive how can this research have anything to do with decided "whether fetuses should" live. Holy Cow... I am SO aggravated right now.....

What's aggravating to me is many different ways that "life" and "alive" are used in the same article. However, that does also reflect the confusion in the debate in general.

68 posted on 01/11/2005 3:06:40 PM PST by beavus
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To: RBranha
Abbott: "There is no "when". Death is not an instantaneous event. It is a continuous process. It involves billions of chemical events over a period of time."

Costello: Fair enough. So you're saying that a person who commits murder isn't guilty of murder because the victim isn't really dead? I didn't think so.

Ah! I can help you here. You are not cognizant of the concept of a continuum. Disparate regions of a continuum ARE quite different even though near regions of a continuum are NOT significantly different. That is the definition of a continuum.

The process of human death (like nearly all biologic processes) falls along a continuum where in one region you are most certainly alive, and in another you are most certainly dead. However, near regions in that continuum involve billions of quite similar cellular events involving even smaller molecular events such as calcium transport. On that scale, one can find no meaningful dividing time point between life and death.

Your original statement -- life has no beginning or end, or something similar -- is a red herring in the abortion debate. Even if Life (with a capital "L") has no beginning or end, from a legal, social, and moral standpoint human life (small "l") does have a beginning and an end.

I don't know what you mean with your capitalization. Of course the law routinely sets necessarily arbitrary dividing points along continua as a practical matter. However, this should not be confused with any real understanding of the underlying process.

69 posted on 01/11/2005 3:15:32 PM PST by beavus
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To: petitfour
Do babies root in utero? (I have not observed such, but maybe some professional researcher has.)

That is a VERY intersting and good question. I don't know the answer, although I'll bet it can be found on the Internet.

Thanks.

70 posted on 01/11/2005 3:18:06 PM PST by beavus
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To: TChris
OK, I'm going to need a guided tour

One of the underlying fundamentals of our universe is its continuity (some processes, especially on quantum scales, are so far below, or inaccessible to, measurement that we can presume they are discontinuous, but this does not apply to most biological phenomenon). This is so fundamental, that most scientists presume it is understood when they use language that literally seems to contradict it.

If you map out the events during conception on a molecular level, you will see millions of nearly identical events occurring in parallel and serially during the conception process. Those molecular events are so similar, that there is no instantaneous instant which has any useful meaning.

Such continua are seen throughout biology. That is why there is no meaningful instant at which hardly ANYTHING begins or ends in biology.

Your arrogance is exceeded only by your attempted obfuscation of simple concepts.

I don't see the arrogance, but I agree the concepts are very simple. That is why I don't understand why you have such difficulty with them.

Human life, the existence of a mortal, individual, living human being, does not rely on the space-time continuum,

Nearly everything we observe about human life follows the space-time continuum. Why would you think that human life has nothing to do with the laws of physics?

It's a simple, basic fact under continuous attack by those who would debase its value to the level of a wart: a tissue mass which poses an inconvenience to its bearer.

Those attacks are made extraordinarily easy by pro-lifers who defend their position with factually incorrect statements. If you to did manage to convince the world that humans have rights because of some magical event that is known to be false, then I sincerely fear for our species.

Studies such as this, joining the ranks of many before it, strengthen the position that an individual, mortal life does not suddenly spring into existence as the fetus passes through the birth canal. That baby is alive well before this blessed event. It is breathing, thinking, dreaming, hearing, moving, feeling and growing. It is a living human being.

Essentially true.

71 posted on 01/11/2005 3:33:58 PM PST by beavus
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To: Jaded
But without conception the chemical reactions would not take place.

Conception IS the chemical reactions.

72 posted on 01/11/2005 3:34:51 PM PST by beavus
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To: beavus
So, if anyone askes "When does life start?", the answer is simply, "It doesn't." In short, there is no poof.

Life doesn't start at any point because it already exists.

You are taking two living cells and combining them to create a new member of the species. Conception is not the start of life, but a continuing of life. So, I will agree with you that there is no magical point where life starts, but since both living cells exist prior to combining, life already exists.

73 posted on 01/11/2005 3:34:53 PM PST by KosmicKitty (Well... There you go again!)
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To: RBranha
So you're saying that just because humans can't observe something, it's not true or it can't exist?

I reread my words, and that is not what I said regarding singularities. It is true that they haven't been observed. And that should not be surprising if one realizes what a singularity is. Singularities result from mathematical models of observable phenomena. Mathematics, which is the tool for our theories, is the abstraction of quantities from their physical observables. You can see one stick twice as large as another. From that you can abstract away the actual stick and form the concept of 'doubling'. Once this abstraction is made, infinity becomes a natural concept. The same is true of the infinitessimal. However, infinite and infinitessimals emerge only once we form that abstraction. As mathematical concepts, they are quite understandable. When one attempts to recombine them with concepts of other observable properties such as mass, length, etc., they become truly unimaginable (but the source of much poetry!). It is a fact that no infinite or infinitessimal quantity has been observed. From the mathematical definitions of infinite and infinitessimal, it is apparent that they could not be measured (infinite ruler? infinitessimal hashmarks?).

In another 1,000 years, I'm sure we'll look like imbeciles compared to the people who will then be alive.

Undoubtedly, but that does not mean that we do not know anything today.

74 posted on 01/11/2005 3:48:40 PM PST by beavus
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To: Paperdoll
Some of your proof is in post #61. Having had three children of my own, just take my word for it. Life begins at conception.

Post 61 does not disprove what we see with our own eyes, nor does it disprove the laws of physics. Nor should the laws of physics and the fact of biological continua detract from your joyous experience or your love of human life.

75 posted on 01/11/2005 3:51:57 PM PST by beavus
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To: beavus; Question_Assumptions
True, a part is not the same as the whole. But, what are you referring to specifically?

Question_Assumptions said (in #25), "At no point in a person's lifecycle, from the moment they cease being a part of their respective parents and start being a distinct individual . . ."

That statement is incoherent because there is no point in a person's lifespan when he is a part of his parents. Parts are not wholes. Persons are wholes. Therefore parts are not persons.

- A8

76 posted on 01/11/2005 3:57:10 PM PST by adiaireton8 ("There is no greater evil one can suffer than to hate reasonable discourse." - Plato, Phaedo 89d)
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To: TChris
Science, my friend, has a long and ignominious history of promoting factual falsehoods.

Sure.

Your objection to the idea of human life beginning and ending appears to be a simple semantic jump to the definition of the word "life" referring to the cellular level biological processes at work in human tissue.

As long as you understand those semantics and realize that conception is a continuous process without a meaningful begining, then I'm good with that. You are in error, however, if you think that there isn't widespread belief in a magical discontinuity.

Frankly, that ain't what this thread is about and you know it.

I'm the one who started this thread!!! LOL!

To ignore the plain fact that a living human being did not exist nine months ago, but there is now a living, squirming, adorable newborn baby, and to torture the definition of the word "beginning" to exclude this process

I'm not doing that.

To blithely pass by the event of a human's ceasing to breathe, his heartbeat stopped, his brain activity nonexistent and the flesh of his body quickly and entirely beginning to decay while declaring that a true "ending" has not occurred is equally silly.

It would be silly if it weren't that many people truely believe that there is a literal ending point.

I'm not exactly sure how correcting people's false ideas on the matter of conception will change the debate. However, I suspect that some people think that human rights is dependent upon the existence of such a nonexistent point. In that case, anyone who cares about human rights, should care about correcting this fallacy.

77 posted on 01/11/2005 4:00:23 PM PST by beavus
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To: Paperdoll
And incidentally, concerning "rights", I imagine you are referring to Civil Rights

I am referring to the philosophical notion of human rights, and not to any type of legal or authoritarian decree.

- The right to life means just that. When the egg is fertilized life begins, thus the right to life, and civil rights, begins at that very moment.

The trouble is, there is no meaningful moment that one can point to during the continuous process of fertilization. I'm not saying a zygote doesn't have rights. I am saying that there is no meaningful instant separating gametes from zygote. This should be obvious to you.

Sorry your mother dropped you on YOUR head.

She denies it.

78 posted on 01/11/2005 4:04:56 PM PST by beavus
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To: Restorer

Was she ok?


79 posted on 01/11/2005 4:08:42 PM PST by TASMANIANRED (pun my typo if you dare.)
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To: KosmicKitty
Life doesn't start at any point because it already exists. You are taking two living cells and combining them to create a new member of the species. Conception is not the start of life, but a continuing of life. So, I will agree with you that there is no magical point where life starts, but since both living cells exist prior to combining, life already exists.

Yes! Exactly! Of all the times I've posted on this issue, you are only the second person to understand! The first was also on this very thread. It must be my lucky day.

I never cease to be amazed at the power of mental blocks. Why do you think continua are so hard for so many people to understand?

Why do you think people insist upon the fallacy of the magical poof at conception? Do you think that that insistence has any detrimental effect?

80 posted on 01/11/2005 4:09:43 PM PST by beavus
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